Satellite Determination Method and Device Based on Doppler Effect

Abstract

The invention discloses a method and device for determining a satellite based on the Doppler effect. The method includes: selecting a plurality of satellites whose orbital parameters are the closest to the same orbital plane and whose satellite overhead time difference is within a set time as candidate satellites; The candidate satellites are sorted successively according to the satellite over-top time, and the satellites in the middle position of the over-top time are used as the reference star; the antenna tracking angle of the ground station is adjusted so that the antenna is always aligned with the reference star; the Doppler corresponding to the reference star is calculated Le frequency shift, using Doppler frequency shift as the compensation amount, compensates and corrects the received satellite downlink signal; determines the signal source satellite corresponding to the signal according to the frequency deviation of the compensated and corrected satellite downlink signal. The satellite determination method and device based on the Doppler effect of the present invention can determine the signal source satellite corresponding to the signal when the received satellite signal cannot be analyzed on the ground or the satellite signal does not contain real-time position information of the satellite, and the implementation process is simple. low cost.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method and device for determining a satellite based on the Doppler effect. Background technique [0002] In a multi-satellite launch mission, multiple satellites are released sequentially after the rocket reaches a predetermined orbit. In the initial stage of satellite separation, each satellite is relatively close to each other and basically operates in the same orbit, and it is difficult for the ground to distinguish each satellite. Under normal circumstances, shortly after the satellite enters orbit, the orbital parameters of each satellite can be determined and announced by the ground measurement and control system. That is, satellites of unknown ownership cannot be claimed. In the process of measurement and control, the ground station can receive the signal from the satellite when the working frequency of the downlink signal of the satellite is known. In ...

AI Technical Summary

Problems solved by technology

However, when the ground cannot analyze the received satellite signal or the satellite signal does not contain the real-time position information of the satellite due to some reasons, it is difficult to determine the signal source satellite

In order to solve the problem that it is difficult to determine the signal source satellite because the ground cannot analyze the signal or the signal does not contain the real-time position information of the satellite, a high-performance radar system is currently used to measure the angle of the cone scanning radar or the angle measurement of the ratio-amplitude monopulse radar. The satellite that sends out the signal performs angle capture to determine the signal source satellite, but this method has high requirements on the performance of the radar system, and the calculation amount of the algorithm and the implementation process are complex and cumbersome, and the implementation cost is high

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